AMD RX6600 GPU passthrough works with Windows 11 driver but I can’t install AMD Adrenalin driver

[YAGA]

Hi there,

My setup: Asrock B550 ITX/AX with Ryzen 5950x + Asus RX 6600 with PVE 8.1.4 and Windows 11 with GPU passthrough.

Windows 11 device manager recognizes AMD Radeon RX 6000 and 32-core AMD 5950x (Qemu with CPU host and numa=1 parameters.

Everything seems to work properly with 3D acceleration based on Windows 11 RX 6600 driver.

I’m unable to install AMD Adrenalin driver because the driver didn’t recognise AMD hardware.

With 3DMark Time Spy, the CPU is not recognised but the demo works properly with good 3D results. I can’t upgrade 3DMark to latest version because my CPU is recognised as a non-SSSE3 compatible.

What is wrong in my setup?

dmesg | grep -e DMAR -e IOMMU
[ 0.799812] pci 0000:00:00.2: AMD-Vi: IOMMU performance counters supported
[ 0.801102] pci 0000:00:00.2: AMD-Vi: Found IOMMU cap 0x40
[ 0.801430] perf/amd_iommu: Detected AMD IOMMU #0 (2 banks, 4 counters/bank).
[ 6.676473] AMD-Vi: AMD IOMMUv2 loaded and initialized

dmesg | grep 'remapping'
[ 0.480953] x2apic: IRQ remapping doesn't support X2APIC mode
[ 0.801109] AMD-Vi: Interrupt remapping enabled

/etc/modules
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

/etc/modprobe.d/blacklist.conf
blacklist radeon
blacklist nvidia

/etc/modprobe.d/pve-blacklist.conf
blacklist nvidiafb

/etc/modprobe.d/vfio.conf
options vfio-pci ids=1002:73ff,1002:ab28 disable_vga=1

extract of /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_iommu=on iommu=pt initcall_blacklist=sysfb_init"

extract of /etc/pve/qemu-server/200.conf
...
agent: 1
balloon: 0
bios: ovmf
cores: 32
cpu: host
hostpci0: 0000:08:00,pcie=1
machine: pc-q35-8.1
memory: 32768
numa: 1
ostype: win11
vga: none
...

Any advice is welcome.
Kind regards,
YAGA

 

[YAGA]

Hi,

Haven't had a response yet. Should I consider that it is common not to be able to install the AMD Adrenalin driver with GPU passthrough?

Kind regards,
YAGA

 

[leesteken]

machine: pc-q35-8.1

In the past AMD drivers did not work for me with Machine Version 8.1 but did work with 7.2. I don't know how Windows 11 responds to such a change (backup or clone it) but you might want to give it a try.

 

[YAGA]

In the past AMD drivers did not work for me with Machine Version 8.1 but did work with 7.2. I don't know how Windows 11 responds to such a change (backup or clone it) but you might want to give it a try.

Thanks @leesteken, I've tried machine pc-q35-7.2 but without success, 3D acceleration still working with Windows driver for RX 6600 but I can't install AMD Adrenalin driver (AMD hardware is not recognised).